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	<h3>帮助</h3>
	<h4>内置变量说明</h4>
	<table class="doc-table">
		<tr>
			<th>名称</th>
			<th>描述</th>
		</tr>
		<tr>
			<td>base</td>
			<td>根路径。类似于request.getContextPath()</td>
		</tr>
		<tr>
			<td>res</td>
			<td>资源文件根路径。</td>
		</tr>
		<tr>
			<td>site</td>
			<td>
				<p>系统管理中定义的变量，新增或修改后需要刷新缓存。</p>
			</td>
		</tr>
		<tr>
			<td>req_uri</td>
			<td>
				<p>请求的地址</p>
			</td>
		</tr>
		<tr>
			<td>url_ext</td>
			<td>
				<p>请求的后缀</p>
			</td>
		</tr>
		<tr>
			<td>_sys_now</td>
			<td>
				<p>当前日期</p>
			</td>
		</tr>
	</table>
	<h4>内置标签说明</h4>
	<table class="doc-table">
		<tr>
			<th>名称</th>
			<th>参数</th>
			<th>描述</th>
		</tr>
		<tr>
			<td>channel_list</td>
			<td>showChild,parentId,isDisplay</td>
			<td>
				<p><b>升级日志标签。</b></p>
				<ul>
					<li>showChild:是否查询子节点。默认为false</li>
					<li>parentId:父栏目ID，默认是跟栏目</li>
					<li>isDisplay:是否显示参数。默认是true</li>
				</ul>
				
			</td>
		</tr>
		<tr>
			<td>faq</td>
			<td>channel,orderBy</td>
			<td>
				<p><b>常见问题。</b></p>
				<ul>
					<li>channel:栏目，即栏目管理中定义的栏目路径</li>
					<li>orderBy:显示顺序，默认按照添加顺序倒序排列</li>
				</ul>
				
			</td>
		</tr>
		<tr>
			<td>sql</td>
			<td>table,columns,selection,orderBy</td>
			<td>
				<p><b>访问数据库。</b></p>
				<ul>
					<li>table:查询的表明</li>
					<li>columns:查询列明</li>
					<li>selection:查询条件</li>
					<li>orderBy:排序</li>
				</ul>
				
			</td>
		</tr>
	</table>
	
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